package com.ztesoft.book.common.utils.wechat.util;

import cn.hutool.http.HttpUtil;
import com.alibaba.fastjson.JSONObject;
import com.ztesoft.book.common.constant.Constant;
import lombok.extern.slf4j.Slf4j;

import javax.net.ssl.HttpsURLConnection;
import javax.net.ssl.SSLContext;
import javax.net.ssl.SSLSocketFactory;
import javax.net.ssl.TrustManager;
import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.net.ConnectException;
import java.net.URL;
import java.net.UnknownHostException;
import java.security.SecureRandom;
import java.util.Map;

/**
 * @author .
 */
@Slf4j
public final class HttpRequestUtil {

    private HttpRequestUtil() {
    }

    /**
     * 发起https请求并获取结果
     *
     * @param requestUrl    请求地址
     * @param requestMethod 请求方式（GET、POST）
     * @param outputStr     提交的数据
     * @return JSONObject(通过JSONObject.get ( key)的方式获取json对象的属性值)
     */
    public static JSONObject httpRequest(String requestUrl, String requestMethod, String outputStr) {
        JSONObject jsonObject = null;
        StringBuffer buffer = new StringBuffer();
        try {
            // 创建SSLContext对象，并使用我们指定的信任管理器初始化
            TrustManager[] tm = {new MyX509TrustManager()};
            SSLContext sslContext = SSLContext.getInstance("SSL", "SunJSSE");
            sslContext.init(null, tm, new SecureRandom());
            // 从上述SSLContext对象中得到SSLSocketFactory对象
            SSLSocketFactory ssf = sslContext.getSocketFactory();
            URL url = new URL(null, requestUrl, new sun.net.www.protocol.https.Handler());
            HttpsURLConnection httpUrlConn = (HttpsURLConnection) url.openConnection();
            httpUrlConn.setSSLSocketFactory(ssf);

            httpUrlConn.setDoOutput(true);
            httpUrlConn.setDoInput(true);
            httpUrlConn.setUseCaches(false);
            // 设置请求方式（GET/POST）
            httpUrlConn.setRequestMethod(requestMethod);

            if (Constant.GET.equalsIgnoreCase(requestMethod)) {
                httpUrlConn.connect();
            }

            // 当有数据需要提交时
            if (null != outputStr) {
                OutputStream outputStream = httpUrlConn.getOutputStream();
                // 注意编码格式，防止中文乱码
                outputStream.write(outputStr.getBytes("UTF-8"));
                outputStream.close();
            }

            // 将返回的输入流转换成字符串
            InputStream inputStream = httpUrlConn.getInputStream();
            InputStreamReader inputStreamReader = new InputStreamReader(inputStream, "utf-8");
            BufferedReader bufferedReader = new BufferedReader(inputStreamReader);

            String str;
            while ((str = bufferedReader.readLine()) != null) {
                buffer.append(str);
            }
            bufferedReader.close();
            inputStreamReader.close();
            // 释放资源
            inputStream.close();
            httpUrlConn.disconnect();
            jsonObject = JSONObject.parseObject(buffer.toString());
        }
        catch (ConnectException ce) {
            log.error("异常", ce);
        }
        catch (UnknownHostException uhe) {
            log.error("微信API无法访问....！", uhe);
        }
        catch (Exception e) {
            log.error("异常", e);
        }
        return jsonObject;
    }


    /**
     * 方法功能描述:
     * < Hutool-http 接口 >
     *
     * @param requestUrl    【参数 1 注释说明】
     * @param requestMethod 【参数 2 注释说明】
     * @param params        【参数 3 注释说明】
     * @return JSONObject                    【返回值 注释说明】
     * @author YangFan
     * @date 2021-07-19 14:42
     */
    public static JSONObject hutoolHttpRequest(String requestUrl, String requestMethod, Map params) {
        JSONObject jsonObject = null;
        if (Constant.GET.equalsIgnoreCase(requestMethod)) {
            String result = "";
            if (params != null && !params.isEmpty()) {
                result = HttpUtil.get(requestUrl, params);
            }
            else {
                result = HttpUtil.get(requestUrl);
            }
            jsonObject = JSONObject.parseObject(result);
        }
        else if (Constant.POST.equalsIgnoreCase(requestMethod)) {
            String result = "";
            result = HttpUtil.post(requestUrl, params);
            jsonObject = JSONObject.parseObject(result);
        }
        return jsonObject;
    }


}
